TROPHIC ECOLOGY OF LIMPETS AMONG ROCKY INTERTIDAL IN BAHIA LAREDO, STRAIT OF MAGELLAN (CHILE)

Diet composition and food sources of the limpets Nacella deaurata and Nacella magellanica were studied in a subantarctic rocky-boulder intertidal system in the Magellan Strait, on the basis of gut contents and stable isotope analyses. Green microalgae (32.5 %), brown algae (22.2 %) and red algae (21.3 %) constituted the main food items in N. deaurata while green microalgae (28.3 %), micro-bivalves (27.4 %) and foraminiferans (20.9 %) were dominant food components in N. magellanica. Relative food items contribution indicated a generalist-type trophic strategy in both species, albeit N. deaurata exhibited a more pronounced herbivory. Stable isotope ratios confirmed this omnivorous / grazer lifestyle. Our results coincide with other studies that report green microalgae to be the major food item for other Nacella species but they also contradict the common view that these limpets are herbivorous animals.

• Publication year

  2014

• Venue

  Anales Del Instituto De La Patagonia

• Publication date

  2014-11-23

• Fields of study

  Biology, Environmental Science

• Identifiers
  DOI 10.4067/S0718-686X2014000200006
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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